Bilateral chronic subdural hematoma presenting with pseudo-subarachnoid hemorrhage sign on computed tomography

Background: On rare occasions, cisterns are demonstrated as high-density areas on computed tomography (CT) and misdiagnosed with subarachnoid hemorrhage (SAH). This false-positive finding is called pseudo-SAH. Patients and Methods: From April 2014 to August 2018, a total of 161 patients with chronic subdural hematoma (CSDH) were treated in our hospital. For these cases, the existence of a pseudo-SAH sign on CT was retrospectively examined. Results: One patient with bilateral CSDH showed pseudo-SAH and a further examination to evaluate vascular abnormalities causing true SAH was necessary. In three patients, the Sylvian fissures were demonstrated as high-density areas due to an atherosclerotic middle cerebral artery; however, the condition was not misdiagnosed with SAH. Conclusion: In cases of CSDH, there is a possibility that CT demonstrates a pseudo-SAH sign. In such cases, close examinations to exclude true SAH are mandatory.

Object Details

• Location: Deutsche Nationalbibliothek Frankfurt am Main
• Extent: Online-Ressource
• Language: Englisch

References and Relationships

• Bibliographic citation: Bilateral chronic subdural hematoma presenting with pseudo-subarachnoid hemorrhage sign on computed tomography ; volume:14 ; number:02 ; year:2019 ; pages:510-512 ; Asian journal of neurosurgery ; 14, Heft 02 (2019), 510-512

Contributors, Places and Time

• Contributor: Shima, Hiroshi ; Shirokane, Kazutaka ; Baba, Eiichi ; Tsuchiya, Atsushi ; Nomura, Motohiro

Further information

• DOI: 10.4103/ajns.AJNS_11_19
• URN: urn:nbn:de:101:1-2022111711430276245624
• Rights: Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
• Last update: 15.08.2025, 7:23 AM CEST